Stirrer and method for manufacturing glass plate

A stirrer, comprising:

• a shaft;
• and
• a plurality of stirring blades mounted on the shaft along a longitudinal direction of the shaft,
• the stirrer being configured to stir molten glass in a stirring vessel by causing the plurality of stirring blades to turn about the shaft in association with rotation of the shaft,
• wherein the plurality of stirring blades each have a distal end portion extending along the longitudinal direction of the shaft,
• wherein the plurality of stirring blades are mounted on the shaft so that, when the plurality of stirring blades turn about the shaft, the stirring blades that are closer to one end side of the shaft are delayed in phase around the shaft with respect to the stirring blades on another end side of the shaft, and
• wherein, among a plurality of groups of the stirring blades, each group including the adjacent stirring blades, an intermediate portion is interposed between the adjacent stirring blades in at least one of the groups of the stirring blades.